Superhydrophobic supplies supply a technique for growing marine anti-corrosion supplies as a result of their low solid-liquid contact space and low floor vitality. Nevertheless, current superhydrophobic anti-corrosion supplies usually undergo from poor mechanical stability and insufficient long-term safety, limiting their sensible utility in real-world environments.
To handle this problem, a analysis crew led by Prof. Zhang Binbin from the Institute of Oceanology of the Chinese language Academy of Sciences (IOCAS) has developed a superhydrophobic composite coating with mechanical stability and long-term anti-corrosion efficiency by using recycled tire rubber (RTR) particles as an armored skeleton construction. Their findings have been just lately revealed within the Chemical Engineering Journal.
Impressed by the wear-resistant, weather-resistant, and cushioning properties of multi-layered rubber working tracks, and motivated by issues over useful resource waste, environmental air pollution, and recycling challenges related to accrued waste rubber tires, the researchers designed a triple-layered superhydrophobic anti-corrosion coating utilizing RTR particles as skeleton construction.
To judge its sturdiness, the researchers subjected the RTR armored superhydrophobic composite coating to 1,200 cycles of sandpaper abrasion, 450 tape-peeling cycles, and 1,050 grams of sand affect. The coating maintained its superhydrophobicity all through these assessments.
Moreover, electrochemical impedance spectroscopy (EIS) revealed that the cost switch resistance and low-frequency impedance modulus of the coated Q235 carbon metal substrate elevated by seven orders of magnitude, whereas the corrosion present density decreased by 5 orders of magnitude. The coating confirmed no indicators of failure or corrosion after 840 hours of three.5 wt.% NaCl immersion and 1,680 hours of marine atmospheric publicity, highlighting its long-term anti-corrosion efficiency.
The designed RTR armored superhydrophobic coating not solely allows useful resource recycling but in addition supplies a brand new pathway for growing extremely wear-resistant and weather-resistant purposeful protecting supplies, the researchers famous.
Extra data: Binbin Zhang et al, Rubber working observe impressed ultra-robust superhydrophobic coating armored with recycled tire rubber (RTR) particles for sustained corrosion resistance, Chemical Engineering Journal (2025). DOI: 10.1016/j.cej.2025.167434
